Resistive Touchscreen Controller ICs

Supports dual-touch gesture sensing without external resistors

Resistive Touchscreen Controller ICsThe BU21023 series of high-speed, high noise immunity, low-voltage resistive touchscreen controllers is now available from ROHM Semiconductor. These new controllers are the industry's first to enable multi-touch (two-point) operation and intuitive gesture control, including pinching, spreading and, rotating - previously possible only with more expensive capacitive touch systems.

This series of ICs integrate a dedicated analog circuit and CPU for precise two-point coordinate and gesture detection. A calibration function is also built-in which minimizes the effects of panel variations during production as well as fluctuations in touchscreen device characteristics caused by temperature variations or time-based degradation.

Features Applications
  • 4-wire resistive touch screen interface
  • 3.0 V single power supply
  • 4-wire SPI interface / 2-wire serial interface
  • Selectable download way of CPU firmware (Host or EEPROM)
  • Two points and gesture detection

Resistive ICs

ImageManufacturer Part NumberDescriptionTypeTouch Panel InterfaceAvailable Quantity
BU21023MUV-E2 datasheet linkIC CTLR TOUCH PANEL 28VQFNBU21023MUV-E2IC CTLR TOUCH PANEL 28VQFNResistive4-Wire2162 - Immediate
BU21023MUV-E2 product page link
Published: 2011-06-16